화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.33, No.2, 594-602, February, 2016
DOI10.1007/s11814-015-0166-z  Export Citation
Preparation of polyphenol fine particles potent antioxidants by a supercritical antisolvent process using different extracts of Olea europaea leaves
Chandrasekar Chinnarasu1, 2, Antonio Montes1, 3, †, Clara Pereyra1, 3, Lourdes Casas1, 3, María Teresa Fernández-Ponce1, 3, Casimiro Mantell1, 3, Sangma Pattabhi2, and Enrique Martínez de la Ossa1, 3
  • 1Department of Chemical Engineering and Food Technology, Faculty of Sciences, International Excellence Agrifood Campus (CeiA3), University of Cadiz, 11510 Puerto Real (Cadiz), Spain
  • 2Department of Environmental Science, PSG College of Arts and Science, Coimbatore, Tamil Nadu 641 014, India
  • 3, Spain
E-mail:
Various extracts from olive leaves have been precipitated by a supercritical antisolvent (SAS) process to evaluate the possibility of producing polyphenol fine particles with controlled size and size distribution. Olive leaves were initially extracted with subcritical fluids using mixtures of CO2+ethanol at 10% and 50%, by pressurized liquid extraction (PLE) with water, ethanol and a hydroalcoholic mixture (50 : 50) (v/v), and also by conventional ethanol extraction (CE). PLE gave the extract with the highest yield and the best antioxidant activity. SAS precipitation was unsuccessful for the extracts obtained with pressurized water and with the hydroalcoholic mixture (50 : 50) (v/v). The SAS precipitates with the smallest particle sizes were produced from extracts obtained with subcritical fluids. The SAS precipitates obtained after the conventional ethanol extraction of olive leaves showed the best antioxidant activity.
Keywords:Olive Leaves;Supercritical CO2;Ethanol;Polyphenol Particles;Antioxidant Activity
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